John Legend, Usher, Tony Bennett, Adam Levine and more will honor Frank Sinatra in CBS' upcoming concert special 'Sinatra 100'

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UPDATE: Lady Gaga, Zac Brown, Harry Connick, Jr. and Celine Dion have all been added as Sinatra 100 performers. “I’ve been singing Frank Sinatra songs in my shows for many years,” the latter singer said in a statement. “His voice has been such an inspiration for me and it will always be.”

“My personal memories of Frank remind me that he was a class act who also knew how to have fun. That’s what this celebration will be,” Elrich said in a statement. “By partnering with Steve Wynn and featuring Las Vegas as the backdrop, the evening will be a party the Rat Pack would be proud of.”

In an iconic career that stretched from the 1930s to his death in 1998, Sinatra was awarded nine Grammys, including three Album of the Year wins (for 1959’s Come Dance With Me, 1965’s September of My Years and 1966’s A Man and His Music). He also received a Grammy Lifetime Achievement Award, Grammy Legend Award and 13 recording inductions into the Grammy Hall of Fame.